Set Barcode Text

This documentation covers how to set barcode text in the Aspose.BarCode Cloud SDK for Dart. The Barcode API supports multiple methods to generate barcodes in different formats using GET and POST requests through the GenerateApi. Barcodes can be generated by specifying various parameters such as barcode type, data to encode, image format and display options. The data encoding process involves defining the type of data and the actual content.

GenerateApi

The GenerateApi interface includes methods for generating barcodes:

GET Request: Uses parameters in the URL route and query string.
POST Request (JSON/XML): Parameters are provided in the request body.
POST Request (Multipart Form): Parameters are sent as URL-encoded form data.

Methods

generate: Generates a barcode via GET request.
generateBody: Generates a barcode via POST request with JSON or XML body.
generateMultipart: Generates a barcode via POST request with multipart form data.

Setting Barcode Text

Properties

dataType: Specifies the type of data encoding (can be string, base64, or hex). If not set, the data value is used as plain text.
data: A string that represents the data to be encoded.

Supported Data Types

Value	Description
StringData (Default value)	Plain text
Base64Bytes	Base64 encoded binary data
HexBytes	Hexadecimal encoded binary data

Barcode Generation Example

Below are examples to demonstrate barcode generation using the GenerateApi methods.

Example 1: Generating a Barcode with GET Request

import 'dart:io';
import 'dart:typed_data';
import 'package:aspose_barcode_cloud/aspose_barcode_cloud.dart';

Configuration makeConfiguration() {
  final envToken = Platform.environment['TEST_CONFIGURATION_ACCESS_TOKEN'];
  if (envToken != null) {
    return Configuration(accessToken: envToken);
  } else {
    return Configuration(
      clientId: "Client Id from https://dashboard.aspose.cloud/applications",
      clientSecret:
          "Client Secret from https://dashboard.aspose.cloud/applications",
    );
  }
}

Future<void> main() async {
  final fileName = "${Directory.current.path}${Platform.pathSeparator}qr.png";
  final configuration = makeConfiguration();
  final apiClient = ApiClient(configuration);
  final generateApi = GenerateApi(apiClient);

  final Uint8List response =
      await generateApi.generate(EncodeBarcodeType.QR, "Aspose.BarCode.Cloud");
  final file = File(fileName);
  file.writeAsBytes(response);

  print("File '${file.path}' generated.");
}

Result Image is:

Example 2: Generating a Barcode with POST Request (JSON Body)

import 'dart:io';
import 'dart:typed_data';

import 'package:aspose_barcode_cloud/aspose_barcode_cloud.dart';

Configuration makeConfiguration() {
  final envToken = Platform.environment['TEST_CONFIGURATION_ACCESS_TOKEN'];
  if (envToken != null) {
    return Configuration(accessToken: envToken);
  } else {
    return Configuration(
      clientId: "Client Id from https://dashboard.aspose.cloud/applications",
      clientSecret:
          "Client Secret from https://dashboard.aspose.cloud/applications",
    );
  }
}

Future<void> main() async {
  final fileName =
      "${Directory.current.path}${Platform.pathSeparator}Pdf417.png";

  final configuration = makeConfiguration();
  final apiClient = ApiClient(configuration);
  final generateApi = GenerateApi(apiClient);

  final postParams = GenerateParams(
    EncodeBarcodeType.Pdf417,
    EncodeData("QXNwb3NlLkJhckNvZGUuQ2xvdWQ=", EncodeDataType.Base64Bytes),
  );

  final Uint8List response = await generateApi.generateBody(postParams);

  final file = File(fileName);
  file.writeAsBytes(response);

  print("File '${file.path}' generated.");
}

Result Image is:

Example 3: Generating a Barcode with POST Request (Multipart Form)

import 'dart:io';
import 'dart:typed_data';

import 'package:aspose_barcode_cloud/aspose_barcode_cloud.dart';

Configuration makeConfiguration() {
  final envToken = Platform.environment['TEST_CONFIGURATION_ACCESS_TOKEN'];
  if (envToken != null) {
    return Configuration(accessToken: envToken);
  } else {
    return Configuration(
      clientId: "Client Id from https://dashboard.aspose.cloud/applications",
      clientSecret:
          "Client Secret from https://dashboard.aspose.cloud/applications",
    );
  }
}

Future<void> main() async {
  final fileName =
      "${Directory.current.path}${Platform.pathSeparator}Code128.png";
  final configuration = makeConfiguration();
  final apiClient = ApiClient(configuration);
  final generateApi = GenerateApi(apiClient);

  final Uint8List response = await generateApi.generateMultipart(
      EncodeBarcodeType.Code128, "4173706F73652E426172436F64652E436C6F7564",
      dataType: EncodeDataType.HexBytes);

  final file = File(fileName);
  await file.writeAsBytes(response);

  print("File '${file.path}' generated.");
}

Result Image is:

This documentation covers how to use the GenerateApi to set barcodes text.

Set Barcode Size